Re: Use of uninitialized value in open second time but not first.

Would not it be easier to open() the scalar and select() the handle?

open my $FH, '>', \$output;
my $old_FH = select($FH);

print "Hello world\n";

select($old_FH);
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Unless the code whose output you need to capture specificaly prints to STDOUT, this should work as well.

Jenda
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Comment on Re: Use of uninitialized value in open second time but not first. Download Code

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Re^2: Use of uninitialized value in open second time but not first. by kyle (Abbot) on Mar 31, 2007 at 00:46 UTC
Thanks for the suggestion! I actually don't know whether the code whose output I want to capture specifically prints to `STDOUT` (I didn't write it). I thought of the select solution too, but then I thought, "but what if it writes directly to `STDOUT`?" So I did this. The solution I had actually works but produces the warning. I mention the "real" problem just in case I'm doing something brainless.	[reply] [d/l] [select]

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Re^2: Use of uninitialized value in open second time but not first.
by kyle (Abbot) on Mar 31, 2007 at 00:46 UTC

Thanks for the suggestion!

I actually don't know whether the code whose output I want to capture specifically prints to STDOUT (I didn't write it). I thought of the select solution too, but then I thought, "but what if it writes directly to STDOUT?" So I did this.

The solution I had actually works but produces the warning. I mention the "real" problem just in case I'm doing something brainless.

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